In 1959, Union Pacific updated its Colorado booklet, this time with a lot more color photos. In fact, there are more than 40 color photos compared with only three in black-and-white (plus six more in the back advertising other Union Pacific destinations). The booklet is 12 pages longer (48 instead of 36) than the 1947 version, perhaps reflecting the prosperity of the 1950s.
Although the map at the back is still limited to Colorado’s northern Front Range of mountains, the expanded book allows room for photos of Mesa Verde, the San Juan Mountains, the Maroon Bells, and other places in western Colorado more associated with Rio Grande territory. The City of Denver having been subsumed into the domeliner City of Portland, that train and the City of St. Louis are the only ones mentioned in the booklet.